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Electrical Switching of Tristate Antiferromagnetic Néel Order in α-Fe_{2}O_{3} Epitaxial Films
- Source :
- Physical review letters. 124(2)
- Publication Year :
- 2019
-
Abstract
- We demonstrate nondecaying, steplike electrical switching of tristate Néel order in Pt/α-Fe_{2}O_{3} bilayers detected by the spin-Hall induced anomalous Hall effect. The as-grown Pt/α-Fe_{2}O_{3} bilayers exhibit sawtooth switching behavior generated by current pulses. After annealing by a high pulse current, the Hall signals reveal single-pulse saturated, nondecaying, steplike switching. Together with control experiments, we show that the sawtooth switching is due to an artifact of Pt while the actual spin-orbit torque induced antiferromagnetic switching is steplike. Our Monte Carlo simulations explain the switching behavior of α-Fe_{2}O_{3} Néel order among three in-plane easy axes.
Details
- ISSN :
- 10797114
- Volume :
- 124
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Physical review letters
- Accession number :
- edsair.pmid..........74bb217d94621ac3912e831cdd768fa9